OBJECT: Cygnus constellation (Swan) taken by 105 mm lens, 5 panels mosaic, overlap 50%. Unfortunately, dew heater did not work very well 🙁.
CALIBRATION: RA 20h 14m, DEC 33°32’ (center of image), FOV 38°x 21°, Field radius 21,57°, Pixel scale 22,7 acrsec/px, Orientation - Up is 48,3° E of N, Image size 6000 x 3302 px.
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 70-200/2,8 @ 105, Astronomic UV/IR/L2 Clip in filter, Rollei Astroklar light pollution filter, Dew heater strip, Sensor pixel scale 8,45 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding.
ACQUISITION: September 2, 2022, Struz, CZ, Subexposure 90s, f 4, ISO 1600, Interval 15 s, 5 panels, 20 frames for each panel, overlap 50%, RAW-L, Lights 100x, Bias 22x, Flats 22x, DarkFlats 22x. Total exposure time 150 min. Night, no wind, 5° C, Backyard - Light pollution - Bortle 5.
STACKING AND POST PROCESSING: AstroPixelProcessor (stacking, background neutralisation, light pollution removal, calibrate background and stars colours) , Adobe Photoshop CC 2022 (stretching, black and white point settings, star reduction, enhance DSO, noise reduction, contrast setting and sharpening). Origin image size 17700px x 10300 px downscale to 6000px x 3302px.
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